static Res MVTInit(Pool pool, Arena arena, PoolClass klass, ArgList args) { Size align = MVT_ALIGN_DEFAULT; Size minSize = MVT_MIN_SIZE_DEFAULT; Size meanSize = MVT_MEAN_SIZE_DEFAULT; Size maxSize = MVT_MAX_SIZE_DEFAULT; Count reserveDepth = MVT_RESERVE_DEPTH_DEFAULT; Count fragLimit = MVT_FRAG_LIMIT_DEFAULT; Size reuseSize, fillSize; Count abqDepth; MVT mvt; Res res; ArgStruct arg; AVER(pool != NULL); AVERT(Arena, arena); AVERT(ArgList, args); UNUSED(klass); /* used for debug pools only */ if (ArgPick(&arg, args, MPS_KEY_ALIGN)) align = arg.val.align; if (ArgPick(&arg, args, MPS_KEY_MIN_SIZE)) minSize = arg.val.size; if (ArgPick(&arg, args, MPS_KEY_MEAN_SIZE)) meanSize = arg.val.size; if (ArgPick(&arg, args, MPS_KEY_MAX_SIZE)) maxSize = arg.val.size; if (ArgPick(&arg, args, MPS_KEY_MVT_RESERVE_DEPTH)) reserveDepth = arg.val.count; if (ArgPick(&arg, args, MPS_KEY_MVT_FRAG_LIMIT)) { /* pending complete fix for job003319 */ AVER(0 <= arg.val.d); AVER(arg.val.d <= 1); fragLimit = (Count)(arg.val.d * 100); } AVERT(Align, align); /* This restriction on the alignment is necessary because of the use of a Freelist to store the free address ranges in low-memory situations. <design/freelist#.impl.grain.align>. */ AVER(AlignIsAligned(align, FreelistMinimumAlignment)); AVER(align <= ArenaGrainSize(arena)); AVER(0 < minSize); AVER(minSize <= meanSize); AVER(meanSize <= maxSize); AVER(reserveDepth > 0); AVER(fragLimit <= 100); /* TODO: More parameter checks possible? */ /* see <design/poolmvt#.arch.parameters> */ fillSize = SizeArenaGrains(maxSize, arena); /* see <design/poolmvt#.arch.fragmentation.internal> */ reuseSize = 2 * fillSize; abqDepth = (reserveDepth * meanSize + reuseSize - 1) / reuseSize; /* keep the abq from being useless */ if (abqDepth < 3) abqDepth = 3; res = NextMethod(Pool, MVTPool, init)(pool, arena, klass, args); if (res != ResOK) goto failNextInit; mvt = CouldBeA(MVTPool, pool); res = LandInit(MVTFreePrimary(mvt), CLASS(CBSFast), arena, align, mvt, mps_args_none); if (res != ResOK) goto failFreePrimaryInit; res = LandInit(MVTFreeSecondary(mvt), CLASS(Freelist), arena, align, mvt, mps_args_none); if (res != ResOK) goto failFreeSecondaryInit; MPS_ARGS_BEGIN(foArgs) { MPS_ARGS_ADD(foArgs, FailoverPrimary, MVTFreePrimary(mvt)); MPS_ARGS_ADD(foArgs, FailoverSecondary, MVTFreeSecondary(mvt)); res = LandInit(MVTFreeLand(mvt), CLASS(Failover), arena, align, mvt, foArgs); } MPS_ARGS_END(foArgs); if (res != ResOK) goto failFreeLandInit; res = ABQInit(arena, MVTABQ(mvt), (void *)mvt, abqDepth, sizeof(RangeStruct)); if (res != ResOK) goto failABQInit; pool->alignment = align; pool->alignShift = SizeLog2(pool->alignment); mvt->reuseSize = reuseSize; mvt->fillSize = fillSize; mvt->abqOverflow = FALSE; mvt->minSize = minSize; mvt->meanSize = meanSize; mvt->maxSize = maxSize; mvt->fragLimit = fragLimit; mvt->splinter = FALSE; mvt->splinterBase = (Addr)0; mvt->splinterLimit = (Addr)0; /* accounting */ mvt->size = 0; mvt->allocated = 0; mvt->available = 0; mvt->availLimit = 0; mvt->unavailable = 0; /* meters*/ METER_INIT(mvt->segAllocs, "segment allocations", (void *)mvt); METER_INIT(mvt->segFrees, "segment frees", (void *)mvt); METER_INIT(mvt->bufferFills, "buffer fills", (void *)mvt); METER_INIT(mvt->bufferEmpties, "buffer empties", (void *)mvt); METER_INIT(mvt->poolFrees, "pool frees", (void *)mvt); METER_INIT(mvt->poolSize, "pool size", (void *)mvt); METER_INIT(mvt->poolAllocated, "pool allocated", (void *)mvt); METER_INIT(mvt->poolAvailable, "pool available", (void *)mvt); METER_INIT(mvt->poolUnavailable, "pool unavailable", (void *)mvt); METER_INIT(mvt->poolUtilization, "pool utilization", (void *)mvt); METER_INIT(mvt->finds, "ABQ finds", (void *)mvt); METER_INIT(mvt->overflows, "ABQ overflows", (void *)mvt); METER_INIT(mvt->underflows, "ABQ underflows", (void *)mvt); METER_INIT(mvt->refills, "ABQ refills", (void *)mvt); METER_INIT(mvt->refillPushes, "ABQ refill pushes", (void *)mvt); METER_INIT(mvt->returns, "ABQ returns", (void *)mvt); METER_INIT(mvt->perfectFits, "perfect fits", (void *)mvt); METER_INIT(mvt->firstFits, "first fits", (void *)mvt); METER_INIT(mvt->secondFits, "second fits", (void *)mvt); METER_INIT(mvt->failures, "failures", (void *)mvt); METER_INIT(mvt->emergencyContingencies, "emergency contingencies", (void *)mvt); METER_INIT(mvt->fragLimitContingencies, "fragmentation limit contingencies", (void *)mvt); METER_INIT(mvt->contingencySearches, "contingency searches", (void *)mvt); METER_INIT(mvt->contingencyHardSearches, "contingency hard searches", (void *)mvt); METER_INIT(mvt->splinters, "splinters", (void *)mvt); METER_INIT(mvt->splintersUsed, "splinters used", (void *)mvt); METER_INIT(mvt->splintersDropped, "splinters dropped", (void *)mvt); METER_INIT(mvt->sawdust, "sawdust", (void *)mvt); METER_INIT(mvt->exceptions, "exceptions", (void *)mvt); METER_INIT(mvt->exceptionSplinters, "exception splinters", (void *)mvt); METER_INIT(mvt->exceptionReturns, "exception returns", (void *)mvt); SetClassOfPoly(pool, CLASS(MVTPool)); mvt->sig = MVTSig; AVERC(MVT, mvt); EVENT6(PoolInitMVT, pool, minSize, meanSize, maxSize, reserveDepth, fragLimit); return ResOK; failABQInit: LandFinish(MVTFreeLand(mvt)); failFreeLandInit: LandFinish(MVTFreeSecondary(mvt)); failFreeSecondaryInit: LandFinish(MVTFreePrimary(mvt)); failFreePrimaryInit: NextMethod(Inst, MVTPool, finish)(MustBeA(Inst, pool)); failNextInit: AVER(res != ResOK); return res; }
void MeterEmit(Meter meter) { EVENT6(MeterValues, meter, meter->total, meter->meanSquared, meter->count, meter->max, meter->min); }